2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1988, 1991, 1993
5 * The Regents of the University of California. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * @(#)rtsock.c 8.7 (Berkeley) 10/12/95
34 #include "opt_compat.h"
35 #include "opt_mpath.h"
37 #include "opt_inet6.h"
39 #include <sys/param.h>
41 #include <sys/kernel.h>
42 #include <sys/domain.h>
44 #include <sys/malloc.h>
48 #include <sys/protosw.h>
49 #include <sys/rwlock.h>
50 #include <sys/signalvar.h>
51 #include <sys/socket.h>
52 #include <sys/socketvar.h>
53 #include <sys/sysctl.h>
54 #include <sys/systm.h>
57 #include <net/if_var.h>
58 #include <net/if_dl.h>
59 #include <net/if_llatbl.h>
60 #include <net/if_types.h>
61 #include <net/netisr.h>
62 #include <net/raw_cb.h>
63 #include <net/route.h>
64 #include <net/route_var.h>
67 #include <netinet/in.h>
68 #include <netinet/if_ether.h>
69 #include <netinet/ip_carp.h>
71 #include <netinet6/ip6_var.h>
72 #include <netinet6/scope6_var.h>
75 #ifdef COMPAT_FREEBSD32
76 #include <sys/mount.h>
77 #include <compat/freebsd32/freebsd32.h>
86 struct if_data ifm_data;
98 uint16_t ifm_data_off;
99 struct if_data ifm_data;
102 struct ifa_msghdrl32 {
103 uint16_t ifam_msglen;
104 uint8_t ifam_version;
109 uint16_t _ifam_spare1;
111 uint16_t ifam_data_off;
113 struct if_data ifam_data;
116 #define SA_SIZE32(sa) \
117 ( (((struct sockaddr *)(sa))->sa_len == 0) ? \
119 1 + ( (((struct sockaddr *)(sa))->sa_len - 1) | (sizeof(int) - 1) ) )
121 #endif /* COMPAT_FREEBSD32 */
123 MALLOC_DEFINE(M_RTABLE, "routetbl", "routing tables");
125 /* NB: these are not modified */
126 static struct sockaddr route_src = { 2, PF_ROUTE, };
127 static struct sockaddr sa_zero = { sizeof(sa_zero), AF_INET, };
129 /* These are external hooks for CARP. */
130 int (*carp_get_vhid_p)(struct ifaddr *);
133 * Used by rtsock/raw_input callback code to decide whether to filter the update
134 * notification to a socket bound to a particular FIB.
136 #define RTS_FILTER_FIB M_PROTO8
139 int ip_count; /* attached w/ AF_INET */
140 int ip6_count; /* attached w/ AF_INET6 */
141 int any_count; /* total attached */
143 static VNET_DEFINE(route_cb_t, route_cb);
144 #define V_route_cb VNET(route_cb)
146 struct mtx rtsock_mtx;
147 MTX_SYSINIT(rtsock, &rtsock_mtx, "rtsock route_cb lock", MTX_DEF);
149 #define RTSOCK_LOCK() mtx_lock(&rtsock_mtx)
150 #define RTSOCK_UNLOCK() mtx_unlock(&rtsock_mtx)
151 #define RTSOCK_LOCK_ASSERT() mtx_assert(&rtsock_mtx, MA_OWNED)
153 static SYSCTL_NODE(_net, OID_AUTO, route, CTLFLAG_RD, 0, "");
159 struct sysctl_req *w_req;
162 static void rts_input(struct mbuf *m);
163 static struct mbuf *rtsock_msg_mbuf(int type, struct rt_addrinfo *rtinfo);
164 static int rtsock_msg_buffer(int type, struct rt_addrinfo *rtinfo,
165 struct walkarg *w, int *plen);
166 static int rt_xaddrs(caddr_t cp, caddr_t cplim,
167 struct rt_addrinfo *rtinfo);
168 static int sysctl_dumpentry(struct radix_node *rn, void *vw);
169 static int sysctl_iflist(int af, struct walkarg *w);
170 static int sysctl_ifmalist(int af, struct walkarg *w);
171 static int route_output(struct mbuf *m, struct socket *so, ...);
172 static void rt_getmetrics(const struct rtentry *rt, struct rt_metrics *out);
173 static void rt_dispatch(struct mbuf *, sa_family_t);
174 static struct sockaddr *rtsock_fix_netmask(struct sockaddr *dst,
175 struct sockaddr *smask, struct sockaddr_storage *dmask);
177 static struct netisr_handler rtsock_nh = {
179 .nh_handler = rts_input,
180 .nh_proto = NETISR_ROUTE,
181 .nh_policy = NETISR_POLICY_SOURCE,
185 sysctl_route_netisr_maxqlen(SYSCTL_HANDLER_ARGS)
189 netisr_getqlimit(&rtsock_nh, &qlimit);
190 error = sysctl_handle_int(oidp, &qlimit, 0, req);
191 if (error || !req->newptr)
195 return (netisr_setqlimit(&rtsock_nh, qlimit));
197 SYSCTL_PROC(_net_route, OID_AUTO, netisr_maxqlen, CTLTYPE_INT|CTLFLAG_RW,
198 0, 0, sysctl_route_netisr_maxqlen, "I",
199 "maximum routing socket dispatch queue length");
206 if (IS_DEFAULT_VNET(curvnet)) {
207 if (TUNABLE_INT_FETCH("net.route.netisr_maxqlen", &tmp))
208 rtsock_nh.nh_qlimit = tmp;
209 netisr_register(&rtsock_nh);
213 netisr_register_vnet(&rtsock_nh);
216 VNET_SYSINIT(vnet_rtsock, SI_SUB_PROTO_DOMAIN, SI_ORDER_THIRD,
221 vnet_rts_uninit(void)
224 netisr_unregister_vnet(&rtsock_nh);
226 VNET_SYSUNINIT(vnet_rts_uninit, SI_SUB_PROTO_DOMAIN, SI_ORDER_THIRD,
231 raw_input_rts_cb(struct mbuf *m, struct sockproto *proto, struct sockaddr *src,
236 KASSERT(m != NULL, ("%s: m is NULL", __func__));
237 KASSERT(proto != NULL, ("%s: proto is NULL", __func__));
238 KASSERT(rp != NULL, ("%s: rp is NULL", __func__));
240 /* No filtering requested. */
241 if ((m->m_flags & RTS_FILTER_FIB) == 0)
244 /* Check if it is a rts and the fib matches the one of the socket. */
245 fibnum = M_GETFIB(m);
246 if (proto->sp_family != PF_ROUTE ||
247 rp->rcb_socket == NULL ||
248 rp->rcb_socket->so_fibnum == fibnum)
251 /* Filtering requested and no match, the socket shall be skipped. */
256 rts_input(struct mbuf *m)
258 struct sockproto route_proto;
259 unsigned short *family;
262 route_proto.sp_family = PF_ROUTE;
263 tag = m_tag_find(m, PACKET_TAG_RTSOCKFAM, NULL);
265 family = (unsigned short *)(tag + 1);
266 route_proto.sp_protocol = *family;
267 m_tag_delete(m, tag);
269 route_proto.sp_protocol = 0;
271 raw_input_ext(m, &route_proto, &route_src, raw_input_rts_cb);
275 * It really doesn't make any sense at all for this code to share much
276 * with raw_usrreq.c, since its functionality is so restricted. XXX
279 rts_abort(struct socket *so)
282 raw_usrreqs.pru_abort(so);
286 rts_close(struct socket *so)
289 raw_usrreqs.pru_close(so);
292 /* pru_accept is EOPNOTSUPP */
295 rts_attach(struct socket *so, int proto, struct thread *td)
300 KASSERT(so->so_pcb == NULL, ("rts_attach: so_pcb != NULL"));
303 rp = malloc(sizeof *rp, M_PCB, M_WAITOK | M_ZERO);
305 so->so_pcb = (caddr_t)rp;
306 so->so_fibnum = td->td_proc->p_fibnum;
307 error = raw_attach(so, proto);
315 switch(rp->rcb_proto.sp_protocol) {
317 V_route_cb.ip_count++;
320 V_route_cb.ip6_count++;
323 V_route_cb.any_count++;
326 so->so_options |= SO_USELOOPBACK;
331 rts_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
334 return (raw_usrreqs.pru_bind(so, nam, td)); /* xxx just EINVAL */
338 rts_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
341 return (raw_usrreqs.pru_connect(so, nam, td)); /* XXX just EINVAL */
344 /* pru_connect2 is EOPNOTSUPP */
345 /* pru_control is EOPNOTSUPP */
348 rts_detach(struct socket *so)
350 struct rawcb *rp = sotorawcb(so);
352 KASSERT(rp != NULL, ("rts_detach: rp == NULL"));
355 switch(rp->rcb_proto.sp_protocol) {
357 V_route_cb.ip_count--;
360 V_route_cb.ip6_count--;
363 V_route_cb.any_count--;
365 raw_usrreqs.pru_detach(so);
369 rts_disconnect(struct socket *so)
372 return (raw_usrreqs.pru_disconnect(so));
375 /* pru_listen is EOPNOTSUPP */
378 rts_peeraddr(struct socket *so, struct sockaddr **nam)
381 return (raw_usrreqs.pru_peeraddr(so, nam));
384 /* pru_rcvd is EOPNOTSUPP */
385 /* pru_rcvoob is EOPNOTSUPP */
388 rts_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
389 struct mbuf *control, struct thread *td)
392 return (raw_usrreqs.pru_send(so, flags, m, nam, control, td));
395 /* pru_sense is null */
398 rts_shutdown(struct socket *so)
401 return (raw_usrreqs.pru_shutdown(so));
405 rts_sockaddr(struct socket *so, struct sockaddr **nam)
408 return (raw_usrreqs.pru_sockaddr(so, nam));
411 static struct pr_usrreqs route_usrreqs = {
412 .pru_abort = rts_abort,
413 .pru_attach = rts_attach,
414 .pru_bind = rts_bind,
415 .pru_connect = rts_connect,
416 .pru_detach = rts_detach,
417 .pru_disconnect = rts_disconnect,
418 .pru_peeraddr = rts_peeraddr,
419 .pru_send = rts_send,
420 .pru_shutdown = rts_shutdown,
421 .pru_sockaddr = rts_sockaddr,
422 .pru_close = rts_close,
425 #ifndef _SOCKADDR_UNION_DEFINED
426 #define _SOCKADDR_UNION_DEFINED
428 * The union of all possible address formats we handle.
430 union sockaddr_union {
432 struct sockaddr_in sin;
433 struct sockaddr_in6 sin6;
435 #endif /* _SOCKADDR_UNION_DEFINED */
438 rtm_get_jailed(struct rt_addrinfo *info, struct ifnet *ifp,
439 struct rtentry *rt, union sockaddr_union *saun, struct ucred *cred)
442 /* First, see if the returned address is part of the jail. */
443 if (prison_if(cred, rt->rt_ifa->ifa_addr) == 0) {
444 info->rti_info[RTAX_IFA] = rt->rt_ifa->ifa_addr;
448 switch (info->rti_info[RTAX_DST]->sa_family) {
458 * Try to find an address on the given outgoing interface
459 * that belongs to the jail.
462 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
465 if (sa->sa_family != AF_INET)
467 ia = ((struct sockaddr_in *)sa)->sin_addr;
468 if (prison_check_ip4(cred, &ia) == 0) {
473 IF_ADDR_RUNLOCK(ifp);
476 * As a last resort return the 'default' jail address.
478 ia = ((struct sockaddr_in *)rt->rt_ifa->ifa_addr)->
480 if (prison_get_ip4(cred, &ia) != 0)
483 bzero(&saun->sin, sizeof(struct sockaddr_in));
484 saun->sin.sin_len = sizeof(struct sockaddr_in);
485 saun->sin.sin_family = AF_INET;
486 saun->sin.sin_addr.s_addr = ia.s_addr;
487 info->rti_info[RTAX_IFA] = (struct sockaddr *)&saun->sin;
500 * Try to find an address on the given outgoing interface
501 * that belongs to the jail.
504 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
507 if (sa->sa_family != AF_INET6)
509 bcopy(&((struct sockaddr_in6 *)sa)->sin6_addr,
510 &ia6, sizeof(struct in6_addr));
511 if (prison_check_ip6(cred, &ia6) == 0) {
516 IF_ADDR_RUNLOCK(ifp);
519 * As a last resort return the 'default' jail address.
521 ia6 = ((struct sockaddr_in6 *)rt->rt_ifa->ifa_addr)->
523 if (prison_get_ip6(cred, &ia6) != 0)
526 bzero(&saun->sin6, sizeof(struct sockaddr_in6));
527 saun->sin6.sin6_len = sizeof(struct sockaddr_in6);
528 saun->sin6.sin6_family = AF_INET6;
529 bcopy(&ia6, &saun->sin6.sin6_addr, sizeof(struct in6_addr));
530 if (sa6_recoverscope(&saun->sin6) != 0)
532 info->rti_info[RTAX_IFA] = (struct sockaddr *)&saun->sin6;
544 route_output(struct mbuf *m, struct socket *so, ...)
546 struct rt_msghdr *rtm = NULL;
547 struct rtentry *rt = NULL;
548 struct rib_head *rnh;
549 struct rt_addrinfo info;
550 struct sockaddr_storage ss;
552 struct sockaddr_in6 *sin6;
553 int i, rti_need_deembed = 0;
555 int alloc_len = 0, len, error = 0, fibnum;
556 struct ifnet *ifp = NULL;
557 union sockaddr_union saun;
558 sa_family_t saf = AF_UNSPEC;
559 struct rawcb *rp = NULL;
562 fibnum = so->so_fibnum;
564 #define senderr(e) { error = e; goto flush;}
565 if (m == NULL || ((m->m_len < sizeof(long)) &&
566 (m = m_pullup(m, sizeof(long))) == NULL))
568 if ((m->m_flags & M_PKTHDR) == 0)
569 panic("route_output");
570 len = m->m_pkthdr.len;
571 if (len < sizeof(*rtm) ||
572 len != mtod(m, struct rt_msghdr *)->rtm_msglen)
576 * Most of current messages are in range 200-240 bytes,
577 * minimize possible re-allocation on reply using larger size
578 * buffer aligned on 1k boundaty.
580 alloc_len = roundup2(len, 1024);
581 if ((rtm = malloc(alloc_len, M_TEMP, M_NOWAIT)) == NULL)
584 m_copydata(m, 0, len, (caddr_t)rtm);
585 bzero(&info, sizeof(info));
586 bzero(&w, sizeof(w));
588 if (rtm->rtm_version != RTM_VERSION) {
589 /* Do not touch message since format is unknown */
592 senderr(EPROTONOSUPPORT);
596 * Starting from here, it is possible
597 * to alter original message and insert
598 * caller PID and error value.
601 rtm->rtm_pid = curproc->p_pid;
602 info.rti_addrs = rtm->rtm_addrs;
604 info.rti_mflags = rtm->rtm_inits;
605 info.rti_rmx = &rtm->rtm_rmx;
608 * rt_xaddrs() performs s6_addr[2] := sin6_scope_id for AF_INET6
609 * link-local address because rtrequest requires addresses with
612 if (rt_xaddrs((caddr_t)(rtm + 1), len + (caddr_t)rtm, &info))
615 info.rti_flags = rtm->rtm_flags;
616 if (info.rti_info[RTAX_DST] == NULL ||
617 info.rti_info[RTAX_DST]->sa_family >= AF_MAX ||
618 (info.rti_info[RTAX_GATEWAY] != NULL &&
619 info.rti_info[RTAX_GATEWAY]->sa_family >= AF_MAX))
621 saf = info.rti_info[RTAX_DST]->sa_family;
623 * Verify that the caller has the appropriate privilege; RTM_GET
624 * is the only operation the non-superuser is allowed.
626 if (rtm->rtm_type != RTM_GET) {
627 error = priv_check(curthread, PRIV_NET_ROUTE);
633 * The given gateway address may be an interface address.
634 * For example, issuing a "route change" command on a route
635 * entry that was created from a tunnel, and the gateway
636 * address given is the local end point. In this case the
637 * RTF_GATEWAY flag must be cleared or the destination will
638 * not be reachable even though there is no error message.
640 if (info.rti_info[RTAX_GATEWAY] != NULL &&
641 info.rti_info[RTAX_GATEWAY]->sa_family != AF_LINK) {
642 struct rt_addrinfo ginfo;
643 struct sockaddr *gdst;
645 bzero(&ginfo, sizeof(ginfo));
646 bzero(&ss, sizeof(ss));
647 ss.ss_len = sizeof(ss);
649 ginfo.rti_info[RTAX_GATEWAY] = (struct sockaddr *)&ss;
650 gdst = info.rti_info[RTAX_GATEWAY];
653 * A host route through the loopback interface is
654 * installed for each interface adddress. In pre 8.0
655 * releases the interface address of a PPP link type
656 * is not reachable locally. This behavior is fixed as
657 * part of the new L2/L3 redesign and rewrite work. The
658 * signature of this interface address route is the
659 * AF_LINK sa_family type of the rt_gateway, and the
660 * rt_ifp has the IFF_LOOPBACK flag set.
662 if (rib_lookup_info(fibnum, gdst, NHR_REF, 0, &ginfo) == 0) {
663 if (ss.ss_family == AF_LINK &&
664 ginfo.rti_ifp->if_flags & IFF_LOOPBACK) {
665 info.rti_flags &= ~RTF_GATEWAY;
666 info.rti_flags |= RTF_GWFLAG_COMPAT;
668 rib_free_info(&ginfo);
672 switch (rtm->rtm_type) {
673 struct rtentry *saved_nrt;
677 if (rtm->rtm_type == RTM_ADD) {
678 if (info.rti_info[RTAX_GATEWAY] == NULL)
683 /* support for new ARP code */
684 if (info.rti_info[RTAX_GATEWAY] != NULL &&
685 info.rti_info[RTAX_GATEWAY]->sa_family == AF_LINK &&
686 (rtm->rtm_flags & RTF_LLDATA) != 0) {
687 error = lla_rt_output(rtm, &info);
690 rti_need_deembed = (V_deembed_scopeid) ? 1 : 0;
694 error = rtrequest1_fib(rtm->rtm_type, &info, &saved_nrt,
696 if (error == 0 && saved_nrt != NULL) {
698 rti_need_deembed = (V_deembed_scopeid) ? 1 : 0;
701 rtm->rtm_index = saved_nrt->rt_ifp->if_index;
702 RT_REMREF(saved_nrt);
703 RT_UNLOCK(saved_nrt);
709 /* support for new ARP code */
710 if (info.rti_info[RTAX_GATEWAY] &&
711 (info.rti_info[RTAX_GATEWAY]->sa_family == AF_LINK) &&
712 (rtm->rtm_flags & RTF_LLDATA) != 0) {
713 error = lla_rt_output(rtm, &info);
716 rti_need_deembed = (V_deembed_scopeid) ? 1 : 0;
720 error = rtrequest1_fib(RTM_DELETE, &info, &saved_nrt, fibnum);
727 /* rt_msg2() will not be used when RTM_DELETE fails. */
728 rti_need_deembed = (V_deembed_scopeid) ? 1 : 0;
733 rnh = rt_tables_get_rnh(fibnum, saf);
735 senderr(EAFNOSUPPORT);
739 if (info.rti_info[RTAX_NETMASK] == NULL &&
740 rtm->rtm_type == RTM_GET) {
742 * Provide longest prefix match for
743 * address lookup (no mask).
744 * 'route -n get addr'
746 rt = (struct rtentry *) rnh->rnh_matchaddr(
747 info.rti_info[RTAX_DST], &rnh->head);
749 rt = (struct rtentry *) rnh->rnh_lookup(
750 info.rti_info[RTAX_DST],
751 info.rti_info[RTAX_NETMASK], &rnh->head);
759 * for RTM_CHANGE/LOCK, if we got multipath routes,
760 * we require users to specify a matching RTAX_GATEWAY.
762 * for RTM_GET, gate is optional even with multipath.
763 * if gate == NULL the first match is returned.
764 * (no need to call rt_mpath_matchgate if gate == NULL)
766 if (rt_mpath_capable(rnh) &&
767 (rtm->rtm_type != RTM_GET || info.rti_info[RTAX_GATEWAY])) {
768 rt = rt_mpath_matchgate(rt, info.rti_info[RTAX_GATEWAY]);
776 * If performing proxied L2 entry insertion, and
777 * the actual PPP host entry is found, perform
778 * another search to retrieve the prefix route of
779 * the local end point of the PPP link.
781 if (rtm->rtm_flags & RTF_ANNOUNCE) {
782 struct sockaddr laddr;
784 if (rt->rt_ifp != NULL &&
785 rt->rt_ifp->if_type == IFT_PROPVIRTUAL) {
788 ifa = ifa_ifwithnet(info.rti_info[RTAX_DST], 1,
791 rt_maskedcopy(ifa->ifa_addr,
795 rt_maskedcopy(rt->rt_ifa->ifa_addr,
797 rt->rt_ifa->ifa_netmask);
799 * refactor rt and no lock operation necessary
801 rt = (struct rtentry *)rnh->rnh_matchaddr(&laddr,
814 if ((rt->rt_flags & RTF_HOST) == 0
815 ? jailed_without_vnet(curthread->td_ucred)
816 : prison_if(curthread->td_ucred,
821 info.rti_info[RTAX_DST] = rt_key(rt);
822 info.rti_info[RTAX_GATEWAY] = rt->rt_gateway;
823 info.rti_info[RTAX_NETMASK] = rtsock_fix_netmask(rt_key(rt),
825 info.rti_info[RTAX_GENMASK] = 0;
826 if (rtm->rtm_addrs & (RTA_IFP | RTA_IFA)) {
829 info.rti_info[RTAX_IFP] =
830 ifp->if_addr->ifa_addr;
831 error = rtm_get_jailed(&info, ifp, rt,
832 &saun, curthread->td_ucred);
837 if (ifp->if_flags & IFF_POINTOPOINT)
838 info.rti_info[RTAX_BRD] =
839 rt->rt_ifa->ifa_dstaddr;
840 rtm->rtm_index = ifp->if_index;
842 info.rti_info[RTAX_IFP] = NULL;
843 info.rti_info[RTAX_IFA] = NULL;
845 } else if ((ifp = rt->rt_ifp) != NULL) {
846 rtm->rtm_index = ifp->if_index;
849 /* Check if we need to realloc storage */
850 rtsock_msg_buffer(rtm->rtm_type, &info, NULL, &len);
851 if (len > alloc_len) {
852 struct rt_msghdr *new_rtm;
853 new_rtm = malloc(len, M_TEMP, M_NOWAIT);
854 if (new_rtm == NULL) {
858 bcopy(rtm, new_rtm, rtm->rtm_msglen);
864 w.w_tmem = (caddr_t)rtm;
865 w.w_tmemsize = alloc_len;
866 rtsock_msg_buffer(rtm->rtm_type, &info, &w, &len);
868 if (rt->rt_flags & RTF_GWFLAG_COMPAT)
869 rtm->rtm_flags = RTF_GATEWAY |
870 (rt->rt_flags & ~RTF_GWFLAG_COMPAT);
872 rtm->rtm_flags = rt->rt_flags;
873 rt_getmetrics(rt, &rtm->rtm_rmx);
874 rtm->rtm_addrs = info.rti_addrs;
887 * Check to see if we don't want our own messages.
889 if ((so->so_options & SO_USELOOPBACK) == 0) {
890 if (V_route_cb.any_count <= 1) {
896 /* There is another listener, so construct message */
902 if (rti_need_deembed) {
903 /* sin6_scope_id is recovered before sending rtm. */
904 sin6 = (struct sockaddr_in6 *)&ss;
905 for (i = 0; i < RTAX_MAX; i++) {
906 if (info.rti_info[i] == NULL)
908 if (info.rti_info[i]->sa_family != AF_INET6)
910 bcopy(info.rti_info[i], sin6, sizeof(*sin6));
911 if (sa6_recoverscope(sin6) == 0)
912 bcopy(sin6, info.rti_info[i],
918 rtm->rtm_errno = error;
920 rtm->rtm_flags |= RTF_DONE;
922 m_copyback(m, 0, rtm->rtm_msglen, (caddr_t)rtm);
923 if (m->m_pkthdr.len < rtm->rtm_msglen) {
926 } else if (m->m_pkthdr.len > rtm->rtm_msglen)
927 m_adj(m, rtm->rtm_msglen - m->m_pkthdr.len);
933 m->m_flags |= RTS_FILTER_FIB;
936 * XXX insure we don't get a copy by
937 * invalidating our protocol
939 unsigned short family = rp->rcb_proto.sp_family;
940 rp->rcb_proto.sp_family = 0;
942 rp->rcb_proto.sp_family = family;
951 rt_getmetrics(const struct rtentry *rt, struct rt_metrics *out)
954 bzero(out, sizeof(*out));
955 out->rmx_mtu = rt->rt_mtu;
956 out->rmx_weight = rt->rt_weight;
957 out->rmx_pksent = counter_u64_fetch(rt->rt_pksent);
958 /* Kernel -> userland timebase conversion. */
959 out->rmx_expire = rt->rt_expire ?
960 rt->rt_expire - time_uptime + time_second : 0;
964 * Extract the addresses of the passed sockaddrs.
965 * Do a little sanity checking so as to avoid bad memory references.
966 * This data is derived straight from userland.
969 rt_xaddrs(caddr_t cp, caddr_t cplim, struct rt_addrinfo *rtinfo)
974 for (i = 0; i < RTAX_MAX && cp < cplim; i++) {
975 if ((rtinfo->rti_addrs & (1 << i)) == 0)
977 sa = (struct sockaddr *)cp;
981 if (cp + sa->sa_len > cplim)
984 * there are no more.. quit now
985 * If there are more bits, they are in error.
986 * I've seen this. route(1) can evidently generate these.
987 * This causes kernel to core dump.
988 * for compatibility, If we see this, point to a safe address.
990 if (sa->sa_len == 0) {
991 rtinfo->rti_info[i] = &sa_zero;
992 return (0); /* should be EINVAL but for compat */
996 if (sa->sa_family == AF_INET6)
997 sa6_embedscope((struct sockaddr_in6 *)sa,
1000 rtinfo->rti_info[i] = sa;
1007 * Fill in @dmask with valid netmask leaving original @smask
1008 * intact. Mostly used with radix netmasks.
1010 static struct sockaddr *
1011 rtsock_fix_netmask(struct sockaddr *dst, struct sockaddr *smask,
1012 struct sockaddr_storage *dmask)
1014 if (dst == NULL || smask == NULL)
1017 memset(dmask, 0, dst->sa_len);
1018 memcpy(dmask, smask, smask->sa_len);
1019 dmask->ss_len = dst->sa_len;
1020 dmask->ss_family = dst->sa_family;
1022 return ((struct sockaddr *)dmask);
1026 * Writes information related to @rtinfo object to newly-allocated mbuf.
1027 * Assumes MCLBYTES is enough to construct any message.
1028 * Used for OS notifications of vaious events (if/ifa announces,etc)
1030 * Returns allocated mbuf or NULL on failure.
1032 static struct mbuf *
1033 rtsock_msg_mbuf(int type, struct rt_addrinfo *rtinfo)
1035 struct rt_msghdr *rtm;
1038 struct sockaddr *sa;
1040 struct sockaddr_storage ss;
1041 struct sockaddr_in6 *sin6;
1049 len = sizeof(struct ifa_msghdr);
1054 len = sizeof(struct ifma_msghdr);
1058 len = sizeof(struct if_msghdr);
1061 case RTM_IFANNOUNCE:
1063 len = sizeof(struct if_announcemsghdr);
1067 len = sizeof(struct rt_msghdr);
1070 /* XXXGL: can we use MJUMPAGESIZE cluster here? */
1071 KASSERT(len <= MCLBYTES, ("%s: message too big", __func__));
1073 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1075 m = m_gethdr(M_NOWAIT, MT_DATA);
1079 m->m_pkthdr.len = m->m_len = len;
1080 rtm = mtod(m, struct rt_msghdr *);
1081 bzero((caddr_t)rtm, len);
1082 for (i = 0; i < RTAX_MAX; i++) {
1083 if ((sa = rtinfo->rti_info[i]) == NULL)
1085 rtinfo->rti_addrs |= (1 << i);
1088 if (V_deembed_scopeid && sa->sa_family == AF_INET6) {
1089 sin6 = (struct sockaddr_in6 *)&ss;
1090 bcopy(sa, sin6, sizeof(*sin6));
1091 if (sa6_recoverscope(sin6) == 0)
1092 sa = (struct sockaddr *)sin6;
1095 m_copyback(m, len, dlen, (caddr_t)sa);
1098 if (m->m_pkthdr.len != len) {
1102 rtm->rtm_msglen = len;
1103 rtm->rtm_version = RTM_VERSION;
1104 rtm->rtm_type = type;
1109 * Writes information related to @rtinfo object to preallocated buffer.
1110 * Stores needed size in @plen. If @w is NULL, calculates size without
1112 * Used for sysctl dumps and rtsock answers (RTM_DEL/RTM_GET) generation.
1114 * Returns 0 on success.
1118 rtsock_msg_buffer(int type, struct rt_addrinfo *rtinfo, struct walkarg *w, int *plen)
1121 int len, buflen = 0, dlen;
1123 struct rt_msghdr *rtm = NULL;
1125 struct sockaddr_storage ss;
1126 struct sockaddr_in6 *sin6;
1128 #ifdef COMPAT_FREEBSD32
1129 bool compat32 = false;
1136 if (w != NULL && w->w_op == NET_RT_IFLISTL) {
1137 #ifdef COMPAT_FREEBSD32
1138 if (w->w_req->flags & SCTL_MASK32) {
1139 len = sizeof(struct ifa_msghdrl32);
1143 len = sizeof(struct ifa_msghdrl);
1145 len = sizeof(struct ifa_msghdr);
1149 #ifdef COMPAT_FREEBSD32
1150 if (w != NULL && w->w_req->flags & SCTL_MASK32) {
1151 if (w->w_op == NET_RT_IFLISTL)
1152 len = sizeof(struct if_msghdrl32);
1154 len = sizeof(struct if_msghdr32);
1159 if (w != NULL && w->w_op == NET_RT_IFLISTL)
1160 len = sizeof(struct if_msghdrl);
1162 len = sizeof(struct if_msghdr);
1166 len = sizeof(struct ifma_msghdr);
1170 len = sizeof(struct rt_msghdr);
1174 rtm = (struct rt_msghdr *)w->w_tmem;
1175 buflen = w->w_tmemsize - len;
1176 cp = (caddr_t)w->w_tmem + len;
1179 rtinfo->rti_addrs = 0;
1180 for (i = 0; i < RTAX_MAX; i++) {
1181 struct sockaddr *sa;
1183 if ((sa = rtinfo->rti_info[i]) == NULL)
1185 rtinfo->rti_addrs |= (1 << i);
1186 #ifdef COMPAT_FREEBSD32
1188 dlen = SA_SIZE32(sa);
1192 if (cp != NULL && buflen >= dlen) {
1194 if (V_deembed_scopeid && sa->sa_family == AF_INET6) {
1195 sin6 = (struct sockaddr_in6 *)&ss;
1196 bcopy(sa, sin6, sizeof(*sin6));
1197 if (sa6_recoverscope(sin6) == 0)
1198 sa = (struct sockaddr *)sin6;
1201 bcopy((caddr_t)sa, cp, (unsigned)dlen);
1204 } else if (cp != NULL) {
1206 * Buffer too small. Count needed size
1207 * and return with error.
1216 dlen = ALIGN(len) - len;
1225 /* fill header iff buffer is large enough */
1226 rtm->rtm_version = RTM_VERSION;
1227 rtm->rtm_type = type;
1228 rtm->rtm_msglen = len;
1233 if (w != NULL && cp == NULL)
1240 * This routine is called to generate a message from the routing
1241 * socket indicating that a redirect has occurred, a routing lookup
1242 * has failed, or that a protocol has detected timeouts to a particular
1246 rt_missmsg_fib(int type, struct rt_addrinfo *rtinfo, int flags, int error,
1249 struct rt_msghdr *rtm;
1251 struct sockaddr *sa = rtinfo->rti_info[RTAX_DST];
1253 if (V_route_cb.any_count == 0)
1255 m = rtsock_msg_mbuf(type, rtinfo);
1259 if (fibnum != RT_ALL_FIBS) {
1260 KASSERT(fibnum >= 0 && fibnum < rt_numfibs, ("%s: fibnum out "
1261 "of range 0 <= %d < %d", __func__, fibnum, rt_numfibs));
1262 M_SETFIB(m, fibnum);
1263 m->m_flags |= RTS_FILTER_FIB;
1266 rtm = mtod(m, struct rt_msghdr *);
1267 rtm->rtm_flags = RTF_DONE | flags;
1268 rtm->rtm_errno = error;
1269 rtm->rtm_addrs = rtinfo->rti_addrs;
1270 rt_dispatch(m, sa ? sa->sa_family : AF_UNSPEC);
1274 rt_missmsg(int type, struct rt_addrinfo *rtinfo, int flags, int error)
1277 rt_missmsg_fib(type, rtinfo, flags, error, RT_ALL_FIBS);
1281 * This routine is called to generate a message from the routing
1282 * socket indicating that the status of a network interface has changed.
1285 rt_ifmsg(struct ifnet *ifp)
1287 struct if_msghdr *ifm;
1289 struct rt_addrinfo info;
1291 if (V_route_cb.any_count == 0)
1293 bzero((caddr_t)&info, sizeof(info));
1294 m = rtsock_msg_mbuf(RTM_IFINFO, &info);
1297 ifm = mtod(m, struct if_msghdr *);
1298 ifm->ifm_index = ifp->if_index;
1299 ifm->ifm_flags = ifp->if_flags | ifp->if_drv_flags;
1300 if_data_copy(ifp, &ifm->ifm_data);
1302 rt_dispatch(m, AF_UNSPEC);
1306 * Announce interface address arrival/withdraw.
1307 * Please do not call directly, use rt_addrmsg().
1308 * Assume input data to be valid.
1309 * Returns 0 on success.
1312 rtsock_addrmsg(int cmd, struct ifaddr *ifa, int fibnum)
1314 struct rt_addrinfo info;
1315 struct sockaddr *sa;
1318 struct ifa_msghdr *ifam;
1319 struct ifnet *ifp = ifa->ifa_ifp;
1320 struct sockaddr_storage ss;
1322 if (V_route_cb.any_count == 0)
1325 ncmd = cmd == RTM_ADD ? RTM_NEWADDR : RTM_DELADDR;
1327 bzero((caddr_t)&info, sizeof(info));
1328 info.rti_info[RTAX_IFA] = sa = ifa->ifa_addr;
1329 info.rti_info[RTAX_IFP] = ifp->if_addr->ifa_addr;
1330 info.rti_info[RTAX_NETMASK] = rtsock_fix_netmask(
1331 info.rti_info[RTAX_IFP], ifa->ifa_netmask, &ss);
1332 info.rti_info[RTAX_BRD] = ifa->ifa_dstaddr;
1333 if ((m = rtsock_msg_mbuf(ncmd, &info)) == NULL)
1335 ifam = mtod(m, struct ifa_msghdr *);
1336 ifam->ifam_index = ifp->if_index;
1337 ifam->ifam_metric = ifa->ifa_ifp->if_metric;
1338 ifam->ifam_flags = ifa->ifa_flags;
1339 ifam->ifam_addrs = info.rti_addrs;
1341 if (fibnum != RT_ALL_FIBS) {
1342 M_SETFIB(m, fibnum);
1343 m->m_flags |= RTS_FILTER_FIB;
1346 rt_dispatch(m, sa ? sa->sa_family : AF_UNSPEC);
1352 * Announce route addition/removal.
1353 * Please do not call directly, use rt_routemsg().
1354 * Note that @rt data MAY be inconsistent/invalid:
1355 * if some userland app sends us "invalid" route message (invalid mask,
1356 * no dst, wrong address families, etc...) we need to pass it back
1357 * to app (and any other rtsock consumers) with rtm_errno field set to
1360 * Returns 0 on success.
1363 rtsock_routemsg(int cmd, struct ifnet *ifp, int error, struct rtentry *rt,
1366 struct rt_addrinfo info;
1367 struct sockaddr *sa;
1369 struct rt_msghdr *rtm;
1370 struct sockaddr_storage ss;
1372 if (V_route_cb.any_count == 0)
1375 bzero((caddr_t)&info, sizeof(info));
1376 info.rti_info[RTAX_DST] = sa = rt_key(rt);
1377 info.rti_info[RTAX_NETMASK] = rtsock_fix_netmask(sa, rt_mask(rt), &ss);
1378 info.rti_info[RTAX_GATEWAY] = rt->rt_gateway;
1379 if ((m = rtsock_msg_mbuf(cmd, &info)) == NULL)
1381 rtm = mtod(m, struct rt_msghdr *);
1382 rtm->rtm_index = ifp->if_index;
1383 rtm->rtm_flags |= rt->rt_flags;
1384 rtm->rtm_errno = error;
1385 rtm->rtm_addrs = info.rti_addrs;
1387 if (fibnum != RT_ALL_FIBS) {
1388 M_SETFIB(m, fibnum);
1389 m->m_flags |= RTS_FILTER_FIB;
1392 rt_dispatch(m, sa ? sa->sa_family : AF_UNSPEC);
1398 * This is the analogue to the rt_newaddrmsg which performs the same
1399 * function but for multicast group memberhips. This is easier since
1400 * there is no route state to worry about.
1403 rt_newmaddrmsg(int cmd, struct ifmultiaddr *ifma)
1405 struct rt_addrinfo info;
1406 struct mbuf *m = NULL;
1407 struct ifnet *ifp = ifma->ifma_ifp;
1408 struct ifma_msghdr *ifmam;
1410 if (V_route_cb.any_count == 0)
1413 bzero((caddr_t)&info, sizeof(info));
1414 info.rti_info[RTAX_IFA] = ifma->ifma_addr;
1415 info.rti_info[RTAX_IFP] = ifp ? ifp->if_addr->ifa_addr : NULL;
1417 * If a link-layer address is present, present it as a ``gateway''
1418 * (similarly to how ARP entries, e.g., are presented).
1420 info.rti_info[RTAX_GATEWAY] = ifma->ifma_lladdr;
1421 m = rtsock_msg_mbuf(cmd, &info);
1424 ifmam = mtod(m, struct ifma_msghdr *);
1425 KASSERT(ifp != NULL, ("%s: link-layer multicast address w/o ifp\n",
1427 ifmam->ifmam_index = ifp->if_index;
1428 ifmam->ifmam_addrs = info.rti_addrs;
1429 rt_dispatch(m, ifma->ifma_addr ? ifma->ifma_addr->sa_family : AF_UNSPEC);
1432 static struct mbuf *
1433 rt_makeifannouncemsg(struct ifnet *ifp, int type, int what,
1434 struct rt_addrinfo *info)
1436 struct if_announcemsghdr *ifan;
1439 if (V_route_cb.any_count == 0)
1441 bzero((caddr_t)info, sizeof(*info));
1442 m = rtsock_msg_mbuf(type, info);
1444 ifan = mtod(m, struct if_announcemsghdr *);
1445 ifan->ifan_index = ifp->if_index;
1446 strlcpy(ifan->ifan_name, ifp->if_xname,
1447 sizeof(ifan->ifan_name));
1448 ifan->ifan_what = what;
1454 * This is called to generate routing socket messages indicating
1455 * IEEE80211 wireless events.
1456 * XXX we piggyback on the RTM_IFANNOUNCE msg format in a clumsy way.
1459 rt_ieee80211msg(struct ifnet *ifp, int what, void *data, size_t data_len)
1462 struct rt_addrinfo info;
1464 m = rt_makeifannouncemsg(ifp, RTM_IEEE80211, what, &info);
1467 * Append the ieee80211 data. Try to stick it in the
1468 * mbuf containing the ifannounce msg; otherwise allocate
1469 * a new mbuf and append.
1471 * NB: we assume m is a single mbuf.
1473 if (data_len > M_TRAILINGSPACE(m)) {
1474 struct mbuf *n = m_get(M_NOWAIT, MT_DATA);
1479 bcopy(data, mtod(n, void *), data_len);
1480 n->m_len = data_len;
1482 } else if (data_len > 0) {
1483 bcopy(data, mtod(m, u_int8_t *) + m->m_len, data_len);
1484 m->m_len += data_len;
1486 if (m->m_flags & M_PKTHDR)
1487 m->m_pkthdr.len += data_len;
1488 mtod(m, struct if_announcemsghdr *)->ifan_msglen += data_len;
1489 rt_dispatch(m, AF_UNSPEC);
1494 * This is called to generate routing socket messages indicating
1495 * network interface arrival and departure.
1498 rt_ifannouncemsg(struct ifnet *ifp, int what)
1501 struct rt_addrinfo info;
1503 m = rt_makeifannouncemsg(ifp, RTM_IFANNOUNCE, what, &info);
1505 rt_dispatch(m, AF_UNSPEC);
1509 rt_dispatch(struct mbuf *m, sa_family_t saf)
1514 * Preserve the family from the sockaddr, if any, in an m_tag for
1515 * use when injecting the mbuf into the routing socket buffer from
1518 if (saf != AF_UNSPEC) {
1519 tag = m_tag_get(PACKET_TAG_RTSOCKFAM, sizeof(unsigned short),
1525 *(unsigned short *)(tag + 1) = saf;
1526 m_tag_prepend(m, tag);
1530 m->m_pkthdr.rcvif = V_loif;
1536 netisr_queue(NETISR_ROUTE, m); /* mbuf is free'd on failure. */
1540 * This is used in dumping the kernel table via sysctl().
1543 sysctl_dumpentry(struct radix_node *rn, void *vw)
1545 struct walkarg *w = vw;
1546 struct rtentry *rt = (struct rtentry *)rn;
1547 int error = 0, size;
1548 struct rt_addrinfo info;
1549 struct sockaddr_storage ss;
1551 if (w->w_op == NET_RT_FLAGS && !(rt->rt_flags & w->w_arg))
1553 if ((rt->rt_flags & RTF_HOST) == 0
1554 ? jailed_without_vnet(w->w_req->td->td_ucred)
1555 : prison_if(w->w_req->td->td_ucred, rt_key(rt)) != 0)
1557 bzero((caddr_t)&info, sizeof(info));
1558 info.rti_info[RTAX_DST] = rt_key(rt);
1559 info.rti_info[RTAX_GATEWAY] = rt->rt_gateway;
1560 info.rti_info[RTAX_NETMASK] = rtsock_fix_netmask(rt_key(rt),
1562 info.rti_info[RTAX_GENMASK] = 0;
1564 info.rti_info[RTAX_IFP] = rt->rt_ifp->if_addr->ifa_addr;
1565 info.rti_info[RTAX_IFA] = rt->rt_ifa->ifa_addr;
1566 if (rt->rt_ifp->if_flags & IFF_POINTOPOINT)
1567 info.rti_info[RTAX_BRD] = rt->rt_ifa->ifa_dstaddr;
1569 if ((error = rtsock_msg_buffer(RTM_GET, &info, w, &size)) != 0)
1571 if (w->w_req && w->w_tmem) {
1572 struct rt_msghdr *rtm = (struct rt_msghdr *)w->w_tmem;
1574 if (rt->rt_flags & RTF_GWFLAG_COMPAT)
1575 rtm->rtm_flags = RTF_GATEWAY |
1576 (rt->rt_flags & ~RTF_GWFLAG_COMPAT);
1578 rtm->rtm_flags = rt->rt_flags;
1579 rt_getmetrics(rt, &rtm->rtm_rmx);
1580 rtm->rtm_index = rt->rt_ifp->if_index;
1581 rtm->rtm_errno = rtm->rtm_pid = rtm->rtm_seq = 0;
1582 rtm->rtm_addrs = info.rti_addrs;
1583 error = SYSCTL_OUT(w->w_req, (caddr_t)rtm, size);
1590 sysctl_iflist_ifml(struct ifnet *ifp, const struct if_data *src_ifd,
1591 struct rt_addrinfo *info, struct walkarg *w, int len)
1593 struct if_msghdrl *ifm;
1594 struct if_data *ifd;
1596 ifm = (struct if_msghdrl *)w->w_tmem;
1598 #ifdef COMPAT_FREEBSD32
1599 if (w->w_req->flags & SCTL_MASK32) {
1600 struct if_msghdrl32 *ifm32;
1602 ifm32 = (struct if_msghdrl32 *)ifm;
1603 ifm32->ifm_addrs = info->rti_addrs;
1604 ifm32->ifm_flags = ifp->if_flags | ifp->if_drv_flags;
1605 ifm32->ifm_index = ifp->if_index;
1606 ifm32->_ifm_spare1 = 0;
1607 ifm32->ifm_len = sizeof(*ifm32);
1608 ifm32->ifm_data_off = offsetof(struct if_msghdrl32, ifm_data);
1609 ifd = &ifm32->ifm_data;
1613 ifm->ifm_addrs = info->rti_addrs;
1614 ifm->ifm_flags = ifp->if_flags | ifp->if_drv_flags;
1615 ifm->ifm_index = ifp->if_index;
1616 ifm->_ifm_spare1 = 0;
1617 ifm->ifm_len = sizeof(*ifm);
1618 ifm->ifm_data_off = offsetof(struct if_msghdrl, ifm_data);
1619 ifd = &ifm->ifm_data;
1622 memcpy(ifd, src_ifd, sizeof(*ifd));
1624 return (SYSCTL_OUT(w->w_req, (caddr_t)ifm, len));
1628 sysctl_iflist_ifm(struct ifnet *ifp, const struct if_data *src_ifd,
1629 struct rt_addrinfo *info, struct walkarg *w, int len)
1631 struct if_msghdr *ifm;
1632 struct if_data *ifd;
1634 ifm = (struct if_msghdr *)w->w_tmem;
1636 #ifdef COMPAT_FREEBSD32
1637 if (w->w_req->flags & SCTL_MASK32) {
1638 struct if_msghdr32 *ifm32;
1640 ifm32 = (struct if_msghdr32 *)ifm;
1641 ifm32->ifm_addrs = info->rti_addrs;
1642 ifm32->ifm_flags = ifp->if_flags | ifp->if_drv_flags;
1643 ifm32->ifm_index = ifp->if_index;
1644 ifd = &ifm32->ifm_data;
1648 ifm->ifm_addrs = info->rti_addrs;
1649 ifm->ifm_flags = ifp->if_flags | ifp->if_drv_flags;
1650 ifm->ifm_index = ifp->if_index;
1651 ifd = &ifm->ifm_data;
1654 memcpy(ifd, src_ifd, sizeof(*ifd));
1656 return (SYSCTL_OUT(w->w_req, (caddr_t)ifm, len));
1660 sysctl_iflist_ifaml(struct ifaddr *ifa, struct rt_addrinfo *info,
1661 struct walkarg *w, int len)
1663 struct ifa_msghdrl *ifam;
1664 struct if_data *ifd;
1666 ifam = (struct ifa_msghdrl *)w->w_tmem;
1668 #ifdef COMPAT_FREEBSD32
1669 if (w->w_req->flags & SCTL_MASK32) {
1670 struct ifa_msghdrl32 *ifam32;
1672 ifam32 = (struct ifa_msghdrl32 *)ifam;
1673 ifam32->ifam_addrs = info->rti_addrs;
1674 ifam32->ifam_flags = ifa->ifa_flags;
1675 ifam32->ifam_index = ifa->ifa_ifp->if_index;
1676 ifam32->_ifam_spare1 = 0;
1677 ifam32->ifam_len = sizeof(*ifam32);
1678 ifam32->ifam_data_off =
1679 offsetof(struct ifa_msghdrl32, ifam_data);
1680 ifam32->ifam_metric = ifa->ifa_ifp->if_metric;
1681 ifd = &ifam32->ifam_data;
1685 ifam->ifam_addrs = info->rti_addrs;
1686 ifam->ifam_flags = ifa->ifa_flags;
1687 ifam->ifam_index = ifa->ifa_ifp->if_index;
1688 ifam->_ifam_spare1 = 0;
1689 ifam->ifam_len = sizeof(*ifam);
1690 ifam->ifam_data_off = offsetof(struct ifa_msghdrl, ifam_data);
1691 ifam->ifam_metric = ifa->ifa_ifp->if_metric;
1692 ifd = &ifam->ifam_data;
1695 bzero(ifd, sizeof(*ifd));
1696 ifd->ifi_datalen = sizeof(struct if_data);
1697 ifd->ifi_ipackets = counter_u64_fetch(ifa->ifa_ipackets);
1698 ifd->ifi_opackets = counter_u64_fetch(ifa->ifa_opackets);
1699 ifd->ifi_ibytes = counter_u64_fetch(ifa->ifa_ibytes);
1700 ifd->ifi_obytes = counter_u64_fetch(ifa->ifa_obytes);
1702 /* Fixup if_data carp(4) vhid. */
1703 if (carp_get_vhid_p != NULL)
1704 ifd->ifi_vhid = (*carp_get_vhid_p)(ifa);
1706 return (SYSCTL_OUT(w->w_req, w->w_tmem, len));
1710 sysctl_iflist_ifam(struct ifaddr *ifa, struct rt_addrinfo *info,
1711 struct walkarg *w, int len)
1713 struct ifa_msghdr *ifam;
1715 ifam = (struct ifa_msghdr *)w->w_tmem;
1716 ifam->ifam_addrs = info->rti_addrs;
1717 ifam->ifam_flags = ifa->ifa_flags;
1718 ifam->ifam_index = ifa->ifa_ifp->if_index;
1719 ifam->ifam_metric = ifa->ifa_ifp->if_metric;
1721 return (SYSCTL_OUT(w->w_req, w->w_tmem, len));
1725 sysctl_iflist(int af, struct walkarg *w)
1730 struct rt_addrinfo info;
1732 struct sockaddr_storage ss;
1734 bzero((caddr_t)&info, sizeof(info));
1735 bzero(&ifd, sizeof(ifd));
1736 IFNET_RLOCK_NOSLEEP();
1737 TAILQ_FOREACH(ifp, &V_ifnet, if_link) {
1738 if (w->w_arg && w->w_arg != ifp->if_index)
1740 if_data_copy(ifp, &ifd);
1743 info.rti_info[RTAX_IFP] = ifa->ifa_addr;
1744 error = rtsock_msg_buffer(RTM_IFINFO, &info, w, &len);
1747 info.rti_info[RTAX_IFP] = NULL;
1748 if (w->w_req && w->w_tmem) {
1749 if (w->w_op == NET_RT_IFLISTL)
1750 error = sysctl_iflist_ifml(ifp, &ifd, &info, w,
1753 error = sysctl_iflist_ifm(ifp, &ifd, &info, w,
1758 while ((ifa = TAILQ_NEXT(ifa, ifa_link)) != NULL) {
1759 if (af && af != ifa->ifa_addr->sa_family)
1761 if (prison_if(w->w_req->td->td_ucred,
1762 ifa->ifa_addr) != 0)
1764 info.rti_info[RTAX_IFA] = ifa->ifa_addr;
1765 info.rti_info[RTAX_NETMASK] = rtsock_fix_netmask(
1766 ifa->ifa_addr, ifa->ifa_netmask, &ss);
1767 info.rti_info[RTAX_BRD] = ifa->ifa_dstaddr;
1768 error = rtsock_msg_buffer(RTM_NEWADDR, &info, w, &len);
1771 if (w->w_req && w->w_tmem) {
1772 if (w->w_op == NET_RT_IFLISTL)
1773 error = sysctl_iflist_ifaml(ifa, &info,
1776 error = sysctl_iflist_ifam(ifa, &info,
1782 IF_ADDR_RUNLOCK(ifp);
1783 info.rti_info[RTAX_IFA] = NULL;
1784 info.rti_info[RTAX_NETMASK] = NULL;
1785 info.rti_info[RTAX_BRD] = NULL;
1789 IF_ADDR_RUNLOCK(ifp);
1790 IFNET_RUNLOCK_NOSLEEP();
1795 sysctl_ifmalist(int af, struct walkarg *w)
1797 struct rt_addrinfo info;
1799 struct ifmultiaddr *ifma;
1804 bzero((caddr_t)&info, sizeof(info));
1806 IFNET_RLOCK_NOSLEEP();
1807 TAILQ_FOREACH(ifp, &V_ifnet, if_link) {
1808 if (w->w_arg && w->w_arg != ifp->if_index)
1811 info.rti_info[RTAX_IFP] = ifa ? ifa->ifa_addr : NULL;
1813 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
1814 if (af && af != ifma->ifma_addr->sa_family)
1816 if (prison_if(w->w_req->td->td_ucred,
1817 ifma->ifma_addr) != 0)
1819 info.rti_info[RTAX_IFA] = ifma->ifma_addr;
1820 info.rti_info[RTAX_GATEWAY] =
1821 (ifma->ifma_addr->sa_family != AF_LINK) ?
1822 ifma->ifma_lladdr : NULL;
1823 error = rtsock_msg_buffer(RTM_NEWMADDR, &info, w, &len);
1826 if (w->w_req && w->w_tmem) {
1827 struct ifma_msghdr *ifmam;
1829 ifmam = (struct ifma_msghdr *)w->w_tmem;
1830 ifmam->ifmam_index = ifma->ifma_ifp->if_index;
1831 ifmam->ifmam_flags = 0;
1832 ifmam->ifmam_addrs = info.rti_addrs;
1833 error = SYSCTL_OUT(w->w_req, w->w_tmem, len);
1838 IF_ADDR_RUNLOCK(ifp);
1842 IFNET_RUNLOCK_NOSLEEP();
1847 sysctl_rtsock(SYSCTL_HANDLER_ARGS)
1849 int *name = (int *)arg1;
1850 u_int namelen = arg2;
1851 struct rib_head *rnh = NULL; /* silence compiler. */
1852 int i, lim, error = EINVAL;
1861 if (name[1] == NET_RT_DUMP) {
1863 fib = req->td->td_proc->p_fibnum;
1864 else if (namelen == 4)
1865 fib = (name[3] == RT_ALL_FIBS) ?
1866 req->td->td_proc->p_fibnum : name[3];
1868 return ((namelen < 3) ? EISDIR : ENOTDIR);
1869 if (fib < 0 || fib >= rt_numfibs)
1871 } else if (namelen != 3)
1872 return ((namelen < 3) ? EISDIR : ENOTDIR);
1876 bzero(&w, sizeof(w));
1881 error = sysctl_wire_old_buffer(req, 0);
1886 * Allocate reply buffer in advance.
1887 * All rtsock messages has maximum length of u_short.
1889 w.w_tmemsize = 65536;
1890 w.w_tmem = malloc(w.w_tmemsize, M_TEMP, M_WAITOK);
1896 if (af == 0) { /* dump all tables */
1899 } else /* dump only one table */
1903 * take care of llinfo entries, the caller must
1906 if (w.w_op == NET_RT_FLAGS &&
1907 (w.w_arg == 0 || w.w_arg & RTF_LLINFO)) {
1909 error = lltable_sysctl_dumparp(af, w.w_req);
1915 * take care of routing entries
1917 for (error = 0; error == 0 && i <= lim; i++) {
1918 rnh = rt_tables_get_rnh(fib, i);
1921 error = rnh->rnh_walktree(&rnh->head,
1922 sysctl_dumpentry, &w);
1925 error = EAFNOSUPPORT;
1930 case NET_RT_IFLISTL:
1931 error = sysctl_iflist(af, &w);
1934 case NET_RT_IFMALIST:
1935 error = sysctl_ifmalist(af, &w);
1939 free(w.w_tmem, M_TEMP);
1943 static SYSCTL_NODE(_net, PF_ROUTE, routetable, CTLFLAG_RD, sysctl_rtsock, "");
1946 * Definitions of protocols supported in the ROUTE domain.
1949 static struct domain routedomain; /* or at least forward */
1951 static struct protosw routesw[] = {
1953 .pr_type = SOCK_RAW,
1954 .pr_domain = &routedomain,
1955 .pr_flags = PR_ATOMIC|PR_ADDR,
1956 .pr_output = route_output,
1957 .pr_ctlinput = raw_ctlinput,
1958 .pr_init = raw_init,
1959 .pr_usrreqs = &route_usrreqs
1963 static struct domain routedomain = {
1964 .dom_family = PF_ROUTE,
1965 .dom_name = "route",
1966 .dom_protosw = routesw,
1967 .dom_protoswNPROTOSW = &routesw[nitems(routesw)]
1970 VNET_DOMAIN_SET(route);